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<html lang="en">
<head>
    <meta charset="UTF-8">
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          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="./style.css">
</head>
<body>
<div class="container">
    <div class="form-box">
        <!-- 注册 -->
        <div class="register-box hidden">
            <h1>Register</h1>
            <input type="text" placeholder="用户名">
            <input type="email" placeholder="邮箱">
            <input type="password" placeholder="密码">
            <input type="password" placeholder="确认密码">
            <button>注册</button>
        </div>
        <!-- 登录 -->
        <div class="login-box">
            <h1>Login</h1>
            <input type="text" placeholder="用户名">
            <input type="password" placeholder="密码">
            <button>注册</button>
        </div>
    </div>
    <div class="con-box left">
        <h2>欢迎来到<span>宠物之家</span></h2>
        <p>快来领取你的专属<span>宠物</span>吧！</p>
        <img src="./images/1.png" alt="">
        <p>已有帐号</p>
        <button id="login">去登录</button>
    </div>
    <div class="con-box right">
        <h2>欢迎来到<span>宠物之家</span></h2>
        <p>快来看看你的可爱<span>宠物</span>吧！</p>
        <img src="./images/2.png" alt="">
        <p>没有帐号？</p>
        <button id="register">去注册</button>
    </div>
</div>

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    let register = document.getElementById('register');
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        register_box.classList.add('hidden');
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</body>
</html>